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Nathan Goodyear

Low-T3 Syndrome - 0 views

circ.ahajournals.org/...708.long

T3 low T3 cardiac heart disease CVD cardiovascular thyroid hormone hormones hypothyroid hypothyroidism

shared by Nathan Goodyear on 03 Jul 12 - No Cached
  • More than 80% of the biologically active hormone triiodothyronine (T3) derives from peripheral conversion of prohormone thyroxine (T4) secreted by the thyroid gland
  • Low thyroid hormone concentrations, in particular low serum T3 concentrations, are a common finding in patients with nonthyroidal illnesses, including cardiac disorders
  • a direct relationship between low circulating levels of T3 and adverse prognosis of cardiac patients
  • ...4 more annotations...
  • The present study clearly shows the existence of a strong association between the reduction of biologically active T3 and mortality in a large population of cardiac hospitalized patients
  • highly significant increase in the incidence of cardiac and cumulative deaths in patients with low T3 compared with patients with normal T3 levels
  • the relevance of the low T3 state as a strong, independent predictor of mortality in cardiac patients
  • low T3 concentrations are a strong independent predictive marker of poor prognosis in cardiac patients
  • Nathan Goodyear on 03 Jul 12
     
    low T3 associated with poor prognosis in cardiac patients.   Poor prognosis = death.  T3 is important in cardiac remodeling, which is inherently important with cardiac disease.
Nathan Goodyear

Thyroid Replacement Therapy and Heart Failure - 0 views

circ.ahajournals.org/...385.full

thyroid T3 hormone hormones cardiovascular disease heart health failure CHF MI myocardial infarction heart attack heart disease

shared by Nathan Goodyear on 24 Sep 14 - No Cached
  • A good biomarker of intracardiac TH signaling would be helpful but has not been identified. In the absence of such a marker, a rational, cautious therapeutic approach might be to restore and maintain over time biochemical euthyroidism as documented by normal circulating levels of TSH, FT4, and FT3.
  • a low-T3 state resulting from altered peripheral TH metabolism secondary to caloric restriction is associated with impaired cardiac contractility
  • Low-T3 syndrome is the central finding and defines the illness in a variety of acute and chronic severe nonthyroidal illnesses with cardiac origin, including MI, HF, and surgically treated cardiac disease.1 Low circulating levels of T3 in the absence of primary thyroid hypofunction have been found in 20% to 30% of patients with dilated cardiomyopathy.
  • ...1 more annotation...
  • FT3 levels were inversely correlated to coronary artery disease
  • Nathan Goodyear on 24 Sep 14
     
    Great review of the current understanding of thyroid hormone metabolism in cardiac tissue.  Low T3 and increased rT3 (via increased D3 activity) is CLEARLY associated with poor cardiac performance and post MI and CHF is associated with poor outcomes.  T3 is critical in cardiac remodeling and recovery post MI.  T3 is actually a vasodilatory in the coronary arteries.   Why a endocrinologist would call rT3 useless only points to their ignorance of the literature.
Nathan Goodyear

Acute Effects of Triiodothyronine (T3) Replacement Therapy in Patients with Chronic Hea... - 0 views

jcem.endojournals.org/...1351.long

T3 fT3 thyroid disease low T3 syndrome T3 syndrome cardiomyopathy CHF congestive heart failure

shared by Nathan Goodyear on 03 Jul 12 - No Cached
  • Nathan Goodyear on 03 Jul 12
     
    IV T3 was given to patients with chronic heart failure.  What the study found may surprise you: improved heart function (ventricular), improved BNP, decrease heart rate, no side effects.  T3 has been shown to be more predictive of cardiac death in those with cardiac disease, than elevated lipids or decreased ejection fraction.
Nathan Goodyear

Reduced activation and increased ina... [J Clin Endocrinol Metab. 2003] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...12843166

inflammation illness thyroid hypothyroid hypothyroidism TSH free T3 rT3 T3:rT3 ratio

shared by Nathan Goodyear on 02 Feb 12 - No Cached
  • These observed changes, in correlation with a low T(3)/rT(3) ratio, may represent tissue-specific ways to reduce thyroid hormone bioactivity during cellular hypoxia and contribute to the low T(3) syndrome of severe illness.
  • Nathan Goodyear on 02 Feb 12
     
    inflammation and critical illness associated with low TSH, low T3, elevated rT3 and low T3:rT3 ratio.
Nathan Goodyear

Acute Effects of Triiodothyronine (T3) Replacement Therapy in Patients with Chronic Hea... - 0 views

jcem.endojournals.org/...1351.short

T3 low cardiac dysfunction heart replacement

shared by Nathan Goodyear on 31 Jan 12 - No Cached
  • Nathan Goodyear on 31 Jan 12
     
    T3 replacement in people with low T3 and cardiac dysfunction found to improve cardiac performance.
Nathan Goodyear

Low-T3 Syndrome: A Strong Prognostic Predictor of Death in Patients With Heart Disease ... - 0 views

circ.ahajournals.org/...708

low t3 syndrome heart disease cardiac

shared by Nathan Goodyear on 01 Feb 11 - No Cached
  • Conclusions— Low-T3 syndrome is a strong predictor of death in cardiac patients and might be directly implicated in the poor prognosis of cardiac patients.
  • Nathan Goodyear on 01 Feb 11
     
    low T3 proves to be a strong predictor of death in patients with heart disease
Nathan Goodyear

Incidence of low-triiodothyronine syndrome in patients with septic shock - 0 views

www.ncbi.nlm.nih.gov/...PMC7853677

T4 TSH non-thyroidal illness syndrome septic shock sepsis T3

shared by Nathan Goodyear on 13 Apr 21 - No Cached
  • In the course of different disease states, the levels of T3, T4, and TSH decrease
  • euthyroid sick syndrome
  • low T3 can contribute to associated organ dysfunction
  • ...5 more annotations...
  • proportionally associated with disease severity and survival
  • nonthyroidal illness syndrome
  • Patients with persistent deterioration of hormone levels (T3, T4) during the study period had higher mortality than those who normalized the function of the thyroid axis
  • LT3S in patients with septic shock is part of the pathophysiology of this disease and/or an associated organ (endocrine-metabolic) failure and not just an adaptive phenomenon
  • substitution treatment with synthetic thyroid hormones could modify the hemodynamic symptoms of septic patients, contributing in part to the decrease in their morbidity and mortality
    • Nathan Goodyear
      Nathan Goodyear on 13 Apr 21
       
      Important statement
  • Nathan Goodyear on 13 Apr 21
     
    Septic shock and low T3
Nathan Goodyear

Low-T3 Syndrome - 0 views

circ.ahajournals.org/...708.full

low T3 syndrome T4 TSH CVD cardiac hypothyroid hypothyroidism thyroid

shared by Nathan Goodyear on 07 Feb 12 - No Cached
  • Nathan Goodyear on 07 Feb 12
     
    low T3, not T4 or TSH, found to be associated with a strong predictor of death in cardiac patients.  This also has implications in predicting outcome in cardiac patients.
Nathan Goodyear

Thyroid function and thyroid hormone metabol... [Klin Wochenschr. 1981] - PubMed - NCBI - 0 views

www.ncbi.nlm.nih.gov/...7241955

hypothyroid hypothyroidism TSH T3 syndrome low aging thyroid hormone

shared by Nathan Goodyear on 07 Feb 12 - No Cached
  • Nathan Goodyear on 07 Feb 12
     
    This study doesn't find evidence of low t3-syndrome, but suggests the impairment of TSH secretion (low TSH)is the first potential sign of thyroid dysfunction.
Nathan Goodyear

Acute Effects of Triiodothyronine (T3) Replacement Therapy in Patients with Chronic Hea... - 0 views

jcem.endojournals.org/...1351

T3 hypothyroid hypothyroidism cardiac disease

shared by Nathan Goodyear on 01 Feb 11 - No Cached
  • In DC patients, short-term synthetic L-T3 replacement therapy significantly improved neuroendocrine profile and ventricular performance
  • Nathan Goodyear on 01 Feb 11
     
    T3 provides significant improvement in cardiac function in those with dilated cardiomyopathy
Nathan Goodyear

Low triiodothyronine syndrome as a predictor of poor outcomes in patients undergoing br... - 0 views

www.researchgate.net/...in_tumor_surgery_A_pilot_study

T3 non-thyroidal illness syndrome euthyroid sick syndrome brain tumor cancer surgery

shared by Nathan Goodyear on 15 Mar 21 - No Cached
  • Nathan Goodyear on 15 Mar 21
     
    Low T3 poor predictor pre-surgery for those with brain tumor.
Nathan Goodyear

Low-T3 Syndrome - 0 views

circ.ahajournals.org/...708.short

T3 low hypothyroid hypothyroidism cardiac CHF

shared by Nathan Goodyear on 31 Jan 12 - No Cached
  • Nathan Goodyear on 31 Jan 12
     
    low T3 is found to be a poor prognostic finding in cardiac patients.
Nathan Goodyear

Reduced Activation and Increased Inactivation of Thyroid Hormone in Tissues of Critical... - 0 views

jcem.endojournals.org/...3202

low T3 hypothyroid illness

shared by Nathan Goodyear on 01 Feb 11 - No Cached
  • T3 syndrome of severe illness.
  • Nathan Goodyear on 01 Feb 11
     
    low T3 (thyroid) seen in those with severe illness
Nathan Goodyear

["Low triiodothyronine (T3) syndrome": "thyroxine (T4) euthyroidism" evidence (author's... - 0 views

pubmed.ncbi.nlm.nih.gov/554102

thyroid hormones low T3 syndrome

shared by Nathan Goodyear on 31 Jul 21 - No Cached
  • Nathan Goodyear on 31 Jul 21
     
    Only abstract available here.
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